Online game server and online game program

摘要

In an online game server 10, an updater updates at least one of a game program and game data for a server 10 stored in a storage section in accordance with an update operation for data to be utilized when a sub game other than a main game is executed on a client terminal 21-2N of an online game system. The updated data are stored in a shared library format that can be utilized in the client terminal 21-2N. A transmitter transmits the updated data including the updated portion data to the client terminal 21-2N. In the client terminal 21-2N, a rewriter rewrites at least one of a game program and game data for client stored in a memory. In the case where there is a specification operational input by a player, a controller controls progress of the sub game part of online game using the updated data stored within the client 21-2N without carrying out communication with the online game server 10. The sub game may be a tutorial mode for the online game that is normally executed using communication with the server 10. The online game therefore has online play and offline play, helping to reduce communication traffic load.